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Music's hottest sibling trio, The Jonas Brothers, told Access Hollywood that rumors of their breakup are false – in fact, the JoBros are gearing up for a new tour.

Updated at 4:00 PM CDT on Monday, Feb 1, 2010

When Michael Jackson's two eldest children took to the stage at the Grammy Awards on Sunday night, to accept their late father's lifetime achievement award, the world stopped to watch.

But on Monday, reports surfaced that Blanket, Michael's youngest son, was supposed to appear on stage but backed out at the last minute after becoming overwhelmed. However, a source close to the Grammys told Access Hollywood that gossip is fiction and Blanket was just fine.

The source told Access that Michael's children themselves decided just Prince Michael I and Paris would speak on stage and accept the award on behalf of their dad.

Blanket did attend the event with Katherine Jackson, his grandmother, who was backstage. She looked after her grandchildren during the big event, the source added.

As previously reported on AccessHollywood.com, following a 3-D tribute to Michael, the King of Pop's eldest children – Prince and Paris – took the stage to accept the Recording Academy's Lifetime Achievement Award on behalf of their late father.

"We are proud to be here to accept this award on behalf of our father, Michael Jackson," Michael's 12-year-old son, Prince, told the captivated audience.

"First of all, we'd like to thank God for watching over us for these past seven months, and our grandma and grandpa for their loving support," he continued. "We'd also like to thank the fans – our father loved you so much because you were always there for him."

Prince and sister Paris took the stage, along with a few of their cousins, following a tribute performance to Michael of "Earth Song" performed by Carrie Underwood, Usher, Smokey Robinson, Celine Dion and Jennifer Hudson.

"Our father was always concerned about the planet and humanity," Prince added. "Through all his hard work and dedication, he has helped many charities."

The child closed his speech with a vow to continue to spread his father's message of love.

"Through all his songs, his message was simple – love. We will continue to spread his message and help the world," an emotional Prince Michael said. "Thank you. We love you daddy."

His younger sister, 11-year-old Paris – who so memorably spoke during the public memorial for Michael over the summer — then took to the microphone with a brief comment before exiting the stage.

"Daddy was supposed to be here and Daddy was going to perform this year [because he] couldn't perform last year," she said. "Thank you. We love you Daddy."